Physics, 12.07.2019 03:00, codycollier

What must the charge (sign and magnitude) of a particle be for it to remain stationary when placed in a downward-directed electric field of magnitude (b) what is the magnitude of an electric field in which the electric force on a proton is equal in magnitude to its weight?

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What must the charge (sign and magnitude) of a particle be for it to remain stationary when placed i...